What would you do with $25,000 - Casey Neistat used the promo budget from ‘The Secret Life of Walter Mitty’ to help typoon victims in the Philippines.

Casey Neistat used the promo budget from ‘The Secret Life of Walter Mitty’ to help typoon victims in the Philippines.

When Manhattan filmmaker Casey Neistat was asked to make a $20,000 promotional video for Ben Stiller's new blockbuster movie, he almost turned it down.

But the email from advertising firm Ogilvy & Mather came five days after the deadliest typhoon on record made landfall in the Philippines, so Neistat replied with a “curt” proposal asking for the full budget upfront to take directly to desperate survivors.

“It was just a joke,” he told the Daily News Tuesday. “Never did I think that they would take it seriously and make it happen"

Neistat, 32, booked flights on his credit card and left with a friend three days later.

Once in the Philippines, Neistat rented two buses and filled them with 4,000 cases of crackers, 2,008 cans of fish, more than 4,000 pounds of rice, 1,440 cans of Spam, 1,000 medical masks, 30 hammers, 30 saws and other supplies – and drove through the night to reach the devastated city of Tacloban.